How To Get Regigigas - Pokémon (BDSP)
The first thing you will have to do is place registeel, regirock & regice in your party.
Click Pokémon option.
Now you need to go to Snow point City.
Click the Town Map option.
Enter the Snowpoint temple.
You need to go to the bottom floor of the temple.
Select ‘Save your progress’ When asked would you like to save your adventure so far?
At the moment it is a body of rock, ice or steel.
When gathering the three Pokémon, the king shall appear.
Push Giratina to catch this Pokémon.
Gotcha! Regigigas was caught!